Derrick.



L. H. JONES.

DERRICK.

APPLICATION FILED APR.9, 1913.

1 1 05,278 Patented July 28, 191

' LACY I-I. JONES, 0F LEWISTON, ILLINOIS.

DERRICK.

Specification of Letters Patent.

Patented July 28, 1914.

Application filed April 9,1913. Serial No. 760,021.

To all whom it may concern:

Be it known that I, LACY H. JONES a citizen of the United States,residing at Lewiston, in the county ofFulton, State of Illinois, haveinvented certain new and useful Improvements in Derricks; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to improvements in lifting devices, andparticularly to a portable derrick.

One object of the invention is to provide a device of this characterwhich is simple in construction, and which is easy of operation.

Another object is to provide a simple device of this character in whichgreat leverage power is produced.

Other objects and advantages will be apparent from the followingdescription when taken in connection with the accompanying drawings.

In the drawings: Figure 1 is a side elevation of the derrick. Fig.2 is atop plan view. Fig. 3 is a front elevation. Fig. 4 is a fragmentarysectional view of portions of the members 14 and 19.

Referring particularly to the accompanying drawings, 10 represents asuitable upright, near the upper end of which are pivoted the downwardlyand forwardly extending braces 11, these braces being connected at theirlower ends to the lower end of the upright by the flexible members 12,these members being preferably chains. Secured to the upper end of theupright and extending horizontally outward over the braces 11 is an arm13 to which is pivotally connected the lifting lever 14, this levercarrying a hook l5. Formed through the upright 10 is a longitudinal slot16 through which the rear or operating end of the lever 14; extends andmoves. Pivoted within the lower end of the slot 16 is the lower end of amoving support 17, the upper end of which is I pressed, and thehandle'end elevated. The

object to be lifted is engaged in the hook 15, and the handle end of thelever 14' pulled down. This will raise the hook end of the lever to liftthe object. The arm 13 is also pivoted to the upright 10, and swingsdownwardly when the lever is moved to engage" an object, and swingsupwardly with the lever. The support 17 acts as a fulcrum for the lever14 and increases the leverage by swinging outwardly as the lifting endof the lever rises.

What is claimed is:

V A derrick comprising a slotted upright, an outwardly extending armpivoted to the upper end of the upright, a lifting lever piv-' otallyconnected near one end to the outer end of the arm and extending throughthe slot of the upright, and a pivoted supporting fulcrum link carriedin the lower end of the slot of the upright and pivotally connected tothe lever below the pivot thereof.

In testimony whereof, I afiix my signature, in presence of twowitnesses.

LACY H. JONES.

Witnesses:

OREss V. GRoAT, FAYE LILLY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

